Loading...
research article
Superoscillatory diffraction-free beams
2011
It is theoretically shown that by superimposing diffraction-free solutions of the Helmholtz equation, one can construct localized diffraction-free beams that pass through predetermined points on subwavelength distances. These beams are based on the phenomenon of superoscillations and thus do not contain any evanescent waves. The effect of an aperture and noise is examined in specific examples where truncated beams with lambda/3 subwavelength features can propagate into the far field. (C) 2011 Optical Society of America
Type
research article
Web of Science ID
WOS:000297215300009
Authors
Publication date
2011
Publisher
Published in
Volume
36
Start page
4335
End page
4337
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
December 16, 2011
Use this identifier to reference this record